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4.2 Reactions of acids

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Question 10

Magnesium ribbon reacts with dilute hydrochloric acid. Magnesium chloride solution and hydrogen gas are formed.

a.

Explain why two hydrogen ions react for each magnesium atom.

[3]
b.

Aluminium also reacts with dilute hydrochloric acid. Each aluminium atom forms an Al3+\text{Al}^{3+}Al3+ ion.

Predict the number of hydrogen ions that react with each aluminium atom. Give a reason for your answer.

[2]
Markscheme

4.2 Reactions of acids Questions

  1. GCSE
  2. /Chemistry
  3. /4.2 Reactions of acids

88 exam-style questions on AQA GCSE Chemistry 4.2 Reactions of acids, covering 4.2.1a Reactions of acids with metals, 4.2.1b Redox in acid-metal reactions, 4.2.2 Neutralisation of acids and salt production, 4.2.3 Soluble salts, 4.2.4 The pH scale and neutralisation, 4.2.5a Titrations, 4.2.5b Calculating quantities in titrations, and 4.2.6 Strong and weak acids. Each one has a worked solution and a mark scheme showing where the marks go.

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